Steam-boiler superheater.



0. LMELLIN 6L F. J. COLE.v

STEAM BOIL'EB SUPERHEATER. APPLIUATIQN FILED mme, 1909.v

Patented Apr. 20,1909,

7 SHEETS-SHEET 1.

wmssss G. J. MELLIN & I'. J. COLE, STEAMl BOILER SUPERHEATBR.

APPLIOATION FILED um, 1909.

918,881. Patented Apr.2o,19o9. l

'l SHEETS-SHEET 2.

wpTNEssEs' c. J. MELLIN E F. J. COLE. l STEAM BOILER SUPERHEATER.

APPLICATION FILED JAN. 6', 1999.

Patented A111120, 1909.

7 SHEETS-SHEET 3.

WITNEssEs G.'J. MBLLIN & P.4J.- CoLE.l

STEAM BOILBR SUPBRHEA'IIER. APPLICATION FILED JAN. 6, 1909.

Patented Apr.20, 1909.

7 SHEETS-SHEET 4.

C. J. MELLINL F'. J. OGLE.

'STEAM BOI'LBBv SUPEYBHEATEB.. APPLIOATIYON FILED JAB'. 6, 1909.

mama Apr. zo, 1909.

\ 7 SHEETS-SHEET 5.

v NVENTQRS WITNESSES" c.'J .-MELL1N M. J. oo LB.

. ASTEAM- BOILER SUPERHEATEB..

' V APPLICATION FILED 6, 1909. l

91 8,381 l m Patented Apr., 2o, 1909;

TSHBBTSQSHEBT 6.

' l )m1-Massesr VSTEAM BQILER SUPERHATEB.. APPLIOATIQNFILED JA. 6, 1909` Patented Apr. 2o, 1909.

'I SHEETS*SHBET 7.

UNITED sTATEs PATENT OEEIOE.

CARL J. MELLINAND ERANoIsJ. COLE, F soHEN'EoTAD'Y, NEW YORK, ASSIGNORS To AMER CAN LOCOMOTIVE COMPANY, or NEW YORK, N. Y., A CORPORATION or NEW YORK.

STEAM-sortais SUPEREEATER.

specification of Letters Patent.

patented April 2o, i909.

Appiieatin med January 6,1909. semina. 471,oo3.

To ali'whom"itwnayfconcem: '.Be 1t known that we, CARL J MELLIN and FRANCIS J. COLE, both of Schenectady, inthe county ofSchenectady andl State-oi. New York, have' ]omtly inventedl a certain new and useful 'Im rovementV in Steam-Boiler l' July `Superheate'rs, o which improvement the fol! lowing is' a specification.

Our inventionrelates to superheaters voi. 8the generalclass or type in which the', superg heater' pipes are located in ire tubesof a 'steam boiler, instanceslof` vwhich are exem` hfied 1n Letters Patent of the United States os. 765,307 .and 849,052granted and is" sued to American 'Locomotive Company,`as asslgnee of FrancisJ. Cole, 'under datesof 19, 1904. and April 12, 1.9.07, respectively.

- pliances.

- The improvement claimed is hereinafter. fully set forth.

In the accompanymg drawings, Figure 1. is a vertical longitudinal section throughthe The object'of-our invention lis to I rovide a .superheater of such general type w ich shall'l` embody, as characteristicfeatures ofim'f. provement, a substantial reduction in the' number'of `ioints required' to be made and maintained steam tight; lcapability of ready j removalv and f replacement of one or .more pairs ofv superheater pi. es without interference with the remain er ofthe appliance;

tight and secure' connections between the' superheater pipesI and headers; and exemptifon from coolin of the superheatedsteam by the action t ereon oflsaturated steam 'during'the assage ofthe latterl 4from the boiler to vang through the superheatin'g" apthrough the.v forward portion of a superhe'at-b 'ing tube, and through the saturated and vsuperheated steam-- headers, and a connection chamber, the three latter members, be-- 510 ingl shown in section o'n the line c a of Fig. 4; Fig. 4, a vertical` section, on a furtherA enlarged scale, through'aconneotrgnchamber,

-perheatin front elevation and partl' i lines h h of,v Fig. 10,-an

.horizontal section, on' an enlarged scale-,

' on'the lines b 5 of Figs. 3 and 5; Fig. 5, a sec-l tion-similar .to that .of Fi 1, illustratingl'a' modification of structure .detaih Fig. (5,11.lv '-view, partly in front elevation and par. `ly in section, of the structural modification shewn' 1n Fig. 5'; Fig. 7, a vertical section, on an enchamber, the 'two' latter `members being shown in section -on thelined d of F" 9 Fig'. 8a horizontal lsectionY through sai .sutube, andy through .the Iconnection cham eron the line e e of Fig. 9.; Fig. -9,

a View, partly infront elevation and xartly in sect1/on on theline c c of Fig. 7,1 an on 'a further enlarged scale of ythe=.connection chamber of F1gs. 7 and 8; Fig. 10, a view,

similar to-Fig. 7, but showingl a modification of. structural detail.V of theheader and -of the manner of forming the loops of -superheater ipe, the headers and connection chamber emg shown in section ony the line ff-of. Fig..

12;'l1`ig. 11,' a horizontal section', on the line g g of Fig. 12, and, Fig. 12, aview, partly in lifsectlon on the on a further en-j larged scale, ythrough the forward ortin of -one of thesuperh'eating tubes of igs. v5 and 56 and Ythrough the saturated and superheated' steam headers and .a connection larged` scale, of .the connectionchamberoff.:

Qurinvention 1s. herein, .as Letters, i Patent-N os. 765,307 and v849,052 aforesaid,

set forth'as a plied inconnectionrwlth 'a.

locomotive boi er,.4,wh ich is ofthe ordinary construction, and is provided at its iforward end- 4with- -asmoke box, v4t". AS p lurfhty yof -fi1ff ltubes, 4, ordinaril "'of commratively small diameter, ez'rtend rom the re box at the rear end 'of the lboiler', which'is not shown,

tothe 'front'luesheem 4d, and the products ofncombustion pass thr'oughsaid tubes'and through .a' `number of tubes, 67, of larger diameter, which arelocated in the uppery 'iand'iniddle ortion'fof the lspacewithin theboiler and w "ch Willbe herein descriptively 'termed superheating tubes. to -the'smoke box, 4, from which they are, discharged into thefatmosphere through a stack 1n the ordinary' manner. Steam is supplied from ,l

theboiler to the cylinders through a-main steam pipe or dry pipe,.61,'passmg through the iront lfine's'heet,';-4d, and connected' in front thereof to. aT head, 62, from which it -is conducted through'superheater ipos, 69, which, vwith their connections, willbe presently described, and, after being super- 'heated in lsaid pipes, passes to the cylinders through headers, 70f, and connected steam pipes,4 63, located on opposite sides of the smoke box. f

In the practice of our invention, We locate in each of the su erheating tubes, 67, one

lor more pairs (pre e'rably as shown, an upper preferred supports. The superheater pipes are open at their forward ends, at which theyv communicate, through connections hereinafterdescribed, vwith the main steam' supply p ipe, 61, andthe branch or delivery steam pipes, 63,'respectively, so as to constitute continuous avenues or channels throughout the length of which the steam which is to be superheated passes frolrnthe supply steam pipe to the branch delivery steam pipes. g

The T head, 62, whichl is, as heretofore located infront of the upper portion of the gtube sheet, 4d, is connected, preferably, as.

shown, by-bein'g' cast integral therewith,

witlra saturated steam header, .70, which,

in the form shown in Figs. 1 to 4 inclusive, consists ofahollow or tubular body, com- 4municating with, and extendii g horizontally on opposite sides of,|theT hea and a plurality of parallel vertical arms or branches, communicating with, and'extending down-- ward-ly from the body. lin the structural modification shown in Figs. 5 to 9 inclusive,

and 10 to 12 inclusive, the relative position ofl the members of the saturated steam header isy changed, that is to. say, the body is vertical and the communicating branches are horizontal, the principle and operative relation of the header'to the other' members of the appliance being, however, thesame' in both cases.

A superheated steam header, 7 0f, substantially similar in form to the saturated steam header, that is to say, consistingof a hollow or tubularbody and'a plurality of arms or branches communieating therewith, is supportedin the smoke box below .the saturated 'steaff'l'ieaden 70, -its branches being alternated in the super eating, by lateral branch or dehvery steam osition with those of the latter,` heated steam header con1mum' pipes', 63, with supply steam passages leadmg y to y theA engine cylinders. Where the branches of the saturated Asteam header are two superheated steam headers, 7Uf, are applied, one on each side of the saturated steam header, each having horizontal branches, alternated in position with those of thc latter, and oomnnlnicating, by a delivery steam pipe, 63, with a supply steam passage le'dding to one of the engine cylinders..

r The connection of the ends of the steam superheating channels formed .by the superheater pipes, 69, to the saturated and superheated steam headers, respectively, which is Ieflected through the intermediation of connectionchambers, k, hereinafter described, in such manner as to reduce the number of steam tight joints, insurel tight l joints, and admit of the ready and convenient attachment' and detachment of anyone or mor'epairs' of superheater pipes to and from the headers, is a leading and characteristic feature of our invention.

The construction herein cxemplilied as practical and regular service, of the results above stated, is the following. l'iefcrring first to ligs. 1 to 9 inclusive, the connection chambers, 76k, one of which is provided for each of the superheater tubes, 67; are hollow or chambered castings, each of which' is' divided by a partition, 70, into a satuheated steam compartment, 76". lf preferred, -the partition, 70"", may he made double, so as to inter-posean open space bctween the com iartments, as in eig. 1;. The forward end of one pipe of each of the pairs or loops of super-heater pipes, 69, of the supr-nheating tube, 67,'in front of which the connection chanfcer; 70k, is located, is expanded into an opening in the rear wail ot' the saturated steam compartment, 76, and the forward end of the other pipe of the pair is similari)v connected to thc rear wail of the snperheated steam compartment, 70". Openings, closed by removable. plugs, 70, are formed in the front walls of the connection chambers, these openings providing for the insertion, examination, cleaning, and repairs of the. superheater pipes. r.the saturated steam compartments, 76, of the connection chambers communicate with the saturated st'ehmxhcader, 70, through openings adjoining one` of their ends,` and the superheated steam compartments, 70", of the connection chambers, communicate with the superheated steam header, 701", through openings adjoining their opposite ends. The connection chambers are secured detachably'to thel saturated and superheated steam headers by pairs'ofbolts, 70, passing through lugs ton the connection chambers on opposite horizontal, as most clearly shown in ig. '7,V

desir-ably adapted 'for the attainment, in-

rated steam compartment, 7 0l, and a superends, soy as to torni a double return ot a single line of pipe.' In this case, the ends "ofV the' line of pipe 'are connected tothe saturated and the superheated steam dompart ments of rthe connection chambers', respec-Y tlvely.V4 and the latter are secured to the headers, in the same manner as above desorlhe'd t J The facilities for assembling and taking;P 2d4v down the entire superheatingappliance, and

for the removal and insertion of any desired .4 p art or parts thereof, as may from time to time become necessary or' desiral'ale, as 'Well' as for making and maintainingtight joints; and for exposing 'a large area of effective heating surface to the action of the hot produots' of c'oi'nhustion' l.passing through the smoke box, will be obvious to, thosef'amiliar with locomotive' boiler construction. We claim as our invention -and l Sure by Letters Patent:

ln a steam boiler superheater, the climblnation'of aT head, a communicating saturated, steam header, a superheated steam header,-` a connection chamber located in front of said headers and havingr a saturated and a superheated steam compartment, communicatlng, respectively, With the saturated and the superheated steam headers, and a pairjif superheater pipes connected at their rear ends and'communicat-ing, at their forf ward ends with-the' compartments ofthe conn ecti'on chamber, i c 2 l steamboiler superheater, the combination 'of a saturated steam header, a superheated Steam header, a connection chamber located infront of said headers; said chamber being independent thereof 'and of the T liead' and?havingasaturat'ed and a su perheated'steam compartment con-imunicat ing', respectively, with the saturated and the superheated steam headers, bolts securmg the connection chamber detachahly to the headers, and a pair of superheaterpipes connectedat their rearends and extendingl he tween'theheaders and communicating', at their forward ends, xif'ith the con'ipartments ofthe connection chamber. Y

asteam boiler superheater, the com- .ni'ofa aturatcd steam h'ea er, a su i header, a connection'chanb' nt of said headers and havand a superheated steam' onnnunicating, respectively,

ing a satu'i compartme desire to sef at the ends of the chamber, with the sato"- ratcd and the superhca tedsteam headers, ball joints interposed hetvreen the-connection Chamb-er and' the headers,- liolts securing the -connection chamser, adjacent to its. ends, do-

tacha .ely to the headers, and a pair of superheater pipes connected at their rear ends and' communicating, at'their forward ends, with the compartments of the connection cham-- ber. j,

4.. ln .a steam boiler superheater, the' combination of a'T head, a communicating satu.

ratedv steam header, a s upe'rheated steam header,` a connection chamber located" -in front of said 'headers With its center linejin'- clinedy relatively thereto, and having afsaturated and a superheated steam compartment communicating, respectively, with the satu-4 rated and the superheated steam headers, and a pair of superheater pipes `connected at their rear ends and communicating, at their forward ends, connection chamber,

5; .ln a steam boi-ler superheater, the combination of aT head, acommunicating 'satu'f rated steamheader,A a superheated steam header, `a .connection chamber located infrontor` said headers and having a satura-ted and a superlieated steaincompartmcnt communicatmg, respectively, with the saturated andthe super e'ated '.steam, headers, and pairs off superheaterpipes independently ith'the compartments of the connected to, and detachable from, the con nection chamber the i es ofeach air beineconnected at their rear ends and comnumi'- eating, at theirforward ends, with the compartments of the connection chamber.

6. In a steam boiler superheater, the coinbination vof a saturated steam headerhavinga plurality. of communicating branches, a superheated steam -header having a plurality of communicating branches alternated in position relatively to those of the saturated steam header, a plurality of 'connection' chambers, each extending in front of av saturated steam header branch and a sup'erheated steam header branch and having a saturated and a superheated-steam compartment com-A municating, respectively, with said branches, and a plurality of pairs of super-heater pipes, the pipes ol each 'pair being fc'onnecte at `their rear ends 'and communicating, at their forward ends, with the compartments of the connection chamber.

'7. The comliination, with a tubular steam 1ooiler, of a plurality of superheatingtubes, a saturated steam header located forward .ot

' 'fsaid tubes and having a plurality of branches ralityloi connection chambers (one foreach superheating tube.) each having "a saturated :Lni l:i superhezitcwl Steam'compartment c0111- inuniczt'ting, respectively, .with the adjacent eaturnted and superheated steam header branches, and a, plurality of pairs of superhenter plpes extending 1n thesuperhentlng tunes, eielrlair being independently con-l ne'cted to an detachable frein a connection chamber and 11i-s plpes belng connected at CARL' J. MELLIN. FRANCIS J. COLE. Witnesses l l?. DRYSDAL, M. A. (BILMORE. 

